EP1719705B1 - Form, fill and seal machine for tubular bags - Google Patents

Form, fill and seal machine for tubular bags Download PDF

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Publication number
EP1719705B1
EP1719705B1 EP20050008508 EP05008508A EP1719705B1 EP 1719705 B1 EP1719705 B1 EP 1719705B1 EP 20050008508 EP20050008508 EP 20050008508 EP 05008508 A EP05008508 A EP 05008508A EP 1719705 B1 EP1719705 B1 EP 1719705B1
Authority
EP
European Patent Office
Prior art keywords
tubular bag
machine according
bag machine
wrapping material
electrically adjustable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP20050008508
Other languages
German (de)
French (fr)
Other versions
EP1719705A1 (en
Inventor
Dieter Vits
Manfred Hauers
Stefan Dr. Lambertz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teepak Spezialmaschinen GmbH and Co KG
Original Assignee
Teepak Spezialmaschinen GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teepak Spezialmaschinen GmbH and Co KG filed Critical Teepak Spezialmaschinen GmbH and Co KG
Priority to EP20050008508 priority Critical patent/EP1719705B1/en
Priority to PT05008508T priority patent/PT1719705E/en
Priority to ES05008508T priority patent/ES2287832T3/en
Priority to DE200550000872 priority patent/DE502005000872D1/en
Priority to AT05008508T priority patent/ATE364552T1/en
Publication of EP1719705A1 publication Critical patent/EP1719705A1/en
Application granted granted Critical
Publication of EP1719705B1 publication Critical patent/EP1719705B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B65B9/2028—Rollers or belts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7841—Holding or clamping means for handling purposes
    • B29C65/7847—Holding or clamping means for handling purposes using vacuum to hold at least one of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7861—In-line machines, i.e. feeding, joining and discharging are in one production line
    • B29C65/787—In-line machines, i.e. feeding, joining and discharging are in one production line using conveyor belts or conveyor chains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7858—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus characterised by the feeding movement of the parts to be joined
    • B29C65/7888—Means for handling of moving sheets or webs
    • B29C65/7894—Means for handling of moving sheets or webs of continuously moving sheets or webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/03—After-treatments in the joint area
    • B29C66/034—Thermal after-treatments
    • B29C66/0342—Cooling, e.g. transporting through welding and cooling zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/836—Moving relative to and tangentially to the parts to be joined, e.g. transversely to the displacement of the parts to be joined, e.g. using a X-Y table
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B41/00—Supplying or feeding container-forming sheets or wrapping material
    • B65B41/12—Feeding webs from rolls
    • B65B41/16—Feeding webs from rolls by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/20—Applying or generating heat or pressure or combinations thereof by fluid pressure acting directly on folds or on opposed surfaces, e.g. using hot-air jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/32—Cooling, or cooling and pressing, package closures after heat-sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/2014—Tube advancing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/10—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs
    • B65B9/20—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles
    • B65B9/213—Enclosing successive articles, or quantities of material, in preformed tubular webs, or in webs formed into tubes around filling nozzles, e.g. extruded tubular webs the webs being formed into tubes in situ around the filling nozzles the web having intermittent motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/82—Pressure application arrangements, e.g. transmission or actuating mechanisms for joining tools or clamps
    • B29C66/824—Actuating mechanisms
    • B29C66/8242—Pneumatic or hydraulic drives

Definitions

  • the present invention relates to a tubular bag machine having the pre-characterizing features of claim 1.
  • the present invention relates in particular to a tubular bag machine for forming, filling and closing tubular bags, which are formed from an envelope supplied as a flat web.
  • Such devices are also described as form-fill-seal devices, and vertical and horizontal tubular bag machines are known.
  • the filling of the tubular bag is carried out regularly via a filling tube, in which the goods to be packaged, regularly a bulk material, is dropped at cyclic intervals.
  • Tubular bag machines of the generic type as for example from the DE 33 45 459 are known, have a feed system for the tube forming sheath.
  • This envelope is regularly deflected by a collar, so that the envelope is guided in a substantially tubular manner around the filling tube, which generally has a rectangular or round cross-section.
  • the delivery system normally includes a biasing device which ensures that the coverstock is fed to the collar under some bias and wrinkle-free.
  • a longitudinal welding device On one side of the filling tube is usually a longitudinal welding device. On opposite other sides of the filling tube is a trigger unit for conveying the Hüllstoffes. This usually has two arranged on opposite longitudinal sides drive belts (see. DE 195 47 860 ). At the lower end of the filling tube is a transverse welding device for forming an upper and lower transverse weld on the tube formed by the longitudinal welding device.
  • the transverse welding device is arranged in a stationary manner.
  • the supplied envelope is supplied cyclically and in movement pauses the Hüllstoffs the transverse weld is formed.
  • the cross-welding device is first applied to the continuously moving tube of Hüllstoffs and moved together with this downward. While opposite welding jaws of the transverse welding device clamp the hose and weld the opposite sides of the hose, bulk material is filled through the filling tube into the hose, which is now closed on the underside.
  • the weld jaw opens, moves upwards and forms the upper weld of the now filled tube bag and at the same time the lower weld of the next tubular bag.
  • a separating device arranged inside the welding jaws for example a knife, separates the filled tubular bag from the hose which is closed only on the underside.
  • the US 4,288,965 which discloses a generic tubular bag machine, deals with the problem of how the Hüllstoff can be gently supplied from a supply roll on the feed system and advanced by means of the drive means without the wrapping material breaks.
  • the main focus in the US 4,288,965 directed to a timed activation of the drive means of the feed system on the one hand and the drive means on the other hand in a discontinuous operation of the tubular bag machine.
  • the problem of an adequate peel force for the envelope to be processed taking into account various material properties and thicknesses, based on the friction behavior and especially in vertical bagging machines due to the weight of the envelope to be processed on the triggering or conveying behavior of the sheaths effect.
  • the extraction device is connected not only with a vacuum source for the suction force of the drive belts. Rather, the contact pressure of the trigger device, ie the pressure force of the drive belts against the filling tube with the interposition of the Hüllstoffs usually provided by pneumatic cylinders. Pneumatic cylinders may also be provided for adjusting the biasing means. Furthermore, the longitudinal welding device can be operated with compressed air in order to heat the cover material as non-contact as possible and to weld the superimposed layers of the covering material to form a tube.
  • the present invention is based on the problem of specifying a tubular bag machine, which can be adapted to changing, to be processed sheaths best possible.
  • the US 4,578,931 discloses a flow wrap machine comprising a vacuum source and take-off belts.
  • the discharge belts are arranged on the vacuum source with the interposition of a valve.
  • the EP-A-974 519 discloses a longitudinal welding device which is arranged on a compressed air source with the interposition of a valve.
  • the disclosed discharge device is controlled by a drive unit.
  • the present invention provides a tubular bag machine having the features of claim 1.
  • the connection to the vacuum source and the compressed air source takes place with the interposition of at least one electrically controllable valve.
  • the effective pneumatic pressure is at least adjusted by manually controllable solenoid valves
  • the pressure level of different pneumatically operated or acting parts of the tubular bag machine according to the invention can be done by driving the or the electrically controllable valves with the present invention.
  • the valve of the tubular bag machine according to the invention is an electrically adjustable valve, which is automatically, that is provided due to predetermined electrical signals. Accordingly, the valve can be accurately controlled, thereby adjusting the pressure level acting.
  • the tubular bag machine according to the invention also has a control device with input device for inputting a pressure to be controlled.
  • the user of the machine may have empirical values for the best possible pressure difference at the suction holes, depending on the particular material of the envelope to be processed and enter these via the input device. As a result, the effort to set the tubular bag machine is reduced with a changing quality of Hüllstoffes. It is then possible to adjust the tubular bag machine quickly and effectively to the respective, to be processed material of Hüllstoffs.
  • the tubular bag machine accordingly has a memory which is provided as part of the control device and is stored in the presettings of the at least one valve with regard to a simple and reliable setting up of the machine.
  • These presets can be selected via the input device.
  • the skilled person is familiar with various ways in which he can realize this selectability based on the input device. Preferably, he will use a touch screen.
  • Each of the default settings has a predetermined setpoint value for each of the electrically adjustable valves.
  • Presets can be configured by the user of the machine.
  • Decisive parameters for determining the presetting are in particular the format of the tubular bag and the material nature.
  • the format has parameters for determining the size of the bag (bag contents) and the weight of the tubular bag filled with the product to be packaged.
  • material-specific parameters for the material of the envelope material are preferably stored for each presetting. Accordingly, the user can immediately select the appropriate operating point for the valve or valves from the stored presets with changing material quality of Hüllstoffes.
  • a correspondingly simplified operation also results, for example, in the event of a change in the format, provided that the desired format or at least one format which is very similar to this is stored as the default.
  • a reliable control of the desired setpoint at the intake holes is achieved in particular by using a proportional valve as the electrically adjustable valve.
  • FIG. 1 is a perspective view of an embodiment of a packaging machine according to the invention with a substantially U-shaped machine frame 2 and a recorded within this machine frame 2 switching and drive cabinet 4 is shown.
  • the machine frame 2 forms in its rear part an unspecified to be detected feeder 6 for a Hüllstoff.
  • the feed device 6 comprises a shaft which can be introduced rotationally fixed into a roll of the wrapping material and which is driven by a feed motor 8 to be recognized laterally.
  • the wrapping material is guided over different pulleys 10 above the switching and drive cabinet 4, up to a collar 12, via which the flat path of the Hüllstoffes is deflected to a moving in the vertical direction hose. Behind the collar 12, the tube is guided around a filling tube 14 with a rectangular cross-section.
  • a longitudinal welding device 18 which fuses the superimposed edges of the Hüllstoffbahn to form a circumferentially closed tube.
  • a transverse welding device 20 with a front welding jaw 22 and a rear welding jaw 24 can be seen.
  • a funnel 26 In extension of the filling tube 14 and over the collar 12 is a funnel 26, through which discharged from a weighing and metering device, not shown, bulk material can be intermittently dropped into the filling tube 24.
  • the vertical one Trajectory of the discarded bulk material is indicated by arrow 28.
  • the respective welding jaws 22, 24 are each connected at the end to punches 30, 32, of which only the punches 22 associated with the front welding jaw 22 can be seen in FIG.
  • the rear welding jaw 24 is shorter than the front welding jaw 22 and accordingly lies between the punches 30.
  • the device shown in Fig. 1 allows the packing of bulk materials in tubular bags.
  • the envelope is continuously formed over the collar 12 to form a tube.
  • Below the filling tube 14 of the tube is clamped by moving together the two welding jaws 22, 24 and welded. While the welding jaws 22, 24 are effective, a predetermined amount of bulk material is dropped through the hopper 26. This fills the now closed end hose. Meanwhile, the hose with its lower weld continuously migrates downwards in a vertical direction.
  • the transverse welding device 20 is opened. The transverse welding device 20 is moved against the direction of movement of the hose upwards and applied to the hose above the bulk material.
  • a separating device provided in the direction of movement of the hose approximately centrally on one of the welding jaws 22, for example a knife, is now actuated in order to separate the closed tubular bag from the hose already closed on the underside.
  • the take-off device comprises two identically designed band housings 40, each of which supports one of the take-off belts 16 rotatably in rotation.
  • 14 toothed wheels 42 are provided at opposite ends of the tape housing, which are spanned by the trigger belts 16.
  • the band housing 40 are mounted on guides not shown in one direction to the filling tube 14 to move. To position this movement, the band housing 40 each have a control cylinder 44 which is formed as a double-acting pneumatic cylinder.
  • the band housings 40 further form a vacuum chamber 46, which communicates with suction holes 48 which are located on the filling tube 14 adjacent portion of the withdrawal belts 16.
  • a vacuum channel 50 is connected, which in an ejector 52.
  • This is an embodiment of a compressed air operated vacuum source, which operates on the Venturi system and in which the mouth of the vacuum channel 50 is surrounded by a surrounding compressed air flow , By this effect, the negative pressure chamber 46 is evacuated.
  • this proportional valve 54 By way of this proportional valve 54, the overpressure in the ejector 52 and thus the vacuum to be set in the vacuum chamber 46 can be changed.
  • the double-acting pneumatic cylinders 54 are connected to each other with their corresponding compressed air connections and also provided with proportional valves 56, 58 behind the connection point.
  • the longitudinal welding device 18 has a first air inlet 60 which leads to a heating chamber 62 formed in the longitudinal welding device 18, at which downstream of the compressed air a multiplicity of hot air outlets 64 arranged one behind the other in the longitudinal direction follow. Below this hot air outlets 64 are also in series successively arranged cold air outlets, which are fed via a formed on the longitudinal welding device 18 second air inlet 68.
  • Proportional valves 70, 72 are located upstream of the air inlets 60, 68. All of the proportional valves 54, 56, 58, 70, 72 are connected via their control lines to a control device (not shown) and pneumatically to a common pressure source.
  • FIG 3 some parts of the feeder 6 can be seen.
  • Two deflecting rollers 74 deflecting the web-like wrapping material are arranged on a pivot arm 76 whose position can be adjusted via a pneumatic cylinder 78.
  • the supply of the pneumatic cylinder 78 with compressed air via a further proportional valve 80, which is also controlled by the control device and pneumatically is connected to the one common pressure source.
  • the material quality initially influences in particular the welding conditions and thus also the amount of air conveyed through the longitudinal welding device 18, both the heated air flowing out as hot air to melt the casing material, and the cold air for cooling the weld produced in this way
  • the filling of the hose with bulk material to be packed immediately after the weld has been created it must have sufficient strength.
  • the contact pressure of the withdrawal belts 16 against the envelope by the cylinder 44 must be adjusted appropriately. Also has to be made to the appropriate material and the format adjustment of the negative pressure, which acts through the suction holes 48 on the envelope.
  • These operating parameters are selected by selecting a preset to a particular format and a particular envelope material, thus defining the operating point of the tubular bag machine. Manual adjustment during operation of the flow wrapper to optimize the operating parameters is not required.
  • the input device can also have options for inputting further parameters which influence the processability of the envelope, for example the ambient temperature and the air humidity.

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Abstract

Bag forming machine comprises a feeding system, a longitudinal welding unit (18) and a discharge unit (17) connected to a compressed air source. The compressed air source and/or a low pressure source has a connection having electrically adjustable valves (54, 56, 58, 70, 72) and a control device with a unit for introducing a pressure to be controlled by the valve. The control device has a storage unit for storing pre-adjustments of the valve which are selected via the discharge unit. The electrically adjustable valves are proportional valves.

Description

Die vorliegende Erfindung betrifft eine Schlauchbeutelmaschine mit den oberbegrifflichen Merkmalen von Anspruch 1. Die vorliegende Erfindung betrifft insbesondere eine Schlauchbeutelmaschine zum Formen, Füllen und Verschließen von Schlauchbeuteln, die aus einem als ebene Bahn zugeführten Hüllstoff gebildet werden. Solche Vorrichtungen werden auch als Form-Fill-Seal-Vorrichtungen beschrieben und es sind vertikale und horizontale Schlauchbeutelmaschinen bekannt. Bei den vertikalen Schlauchbeutelmaschinen erfolgt die Befüllung der Schlauchbeutel regelmäßig über ein Füllrohr, in welches das zu verpackende Gut, regelmäßig ein Schüttgut, in zyklischen Abständen abgeworfen wird.The present invention relates to a tubular bag machine having the pre-characterizing features of claim 1. The present invention relates in particular to a tubular bag machine for forming, filling and closing tubular bags, which are formed from an envelope supplied as a flat web. Such devices are also described as form-fill-seal devices, and vertical and horizontal tubular bag machines are known. In the vertical tubular bag machines, the filling of the tubular bag is carried out regularly via a filling tube, in which the goods to be packaged, regularly a bulk material, is dropped at cyclic intervals.

Schlauchbeutelmaschinen der gattungsgemäßen Art, wie sie beispielsweise aus der DE 33 45 459 bekannt sind, weisen ein Zuführsystem für den den Schlauch bildenden Hüllstoff auf. Dieser Hüllstoff wird regelmäßig über einen Kragen umgelenkt, so dass der Hüllstoff im wesentlichen schlauchförmig um das Füllrohr geführt wird, welches in der Regel einen rechteckigen oder runden Querschnitt hat. Das Zuführsystem weist normalerweise eine Vorspanneinrichtung auf, die sicherstellt, dass der Hüllstoff unter einer gewissen Vorspannung und faltenfrei zu dem Kragen geführt wird.Tubular bag machines of the generic type, as for example from the DE 33 45 459 are known, have a feed system for the tube forming sheath. This envelope is regularly deflected by a collar, so that the envelope is guided in a substantially tubular manner around the filling tube, which generally has a rectangular or round cross-section. The delivery system normally includes a biasing device which ensures that the coverstock is fed to the collar under some bias and wrinkle-free.

An einer Seite des Füllrohres befindet sich üblicherweise eine Längsschweißeinrichtung. An gegenüberliegenden anderen Seiten des Füllrohres befindet sich eine Abzugseinheit zum Fördern des Hüllstoffes. Diese hat üblicherweise zwei an gegenüberliegenden Längsseiten angeordnete Antriebsbänder (vgl. DE 195 47 860 ). Am unteren Ende des Füllrohres befindet sich eine Querschweißeinrichtung zum Bilden einer oberen und unteren Querschweißnaht an dem durch die Längsschweißeinrichtung gebildeten Schlauch.On one side of the filling tube is usually a longitudinal welding device. On opposite other sides of the filling tube is a trigger unit for conveying the Hüllstoffes. This usually has two arranged on opposite longitudinal sides drive belts (see. DE 195 47 860 ). At the lower end of the filling tube is a transverse welding device for forming an upper and lower transverse weld on the tube formed by the longitudinal welding device.

Es gibt kontinuierlich arbeitende Schlauchbeutelmaschinen und diskontinuierlich arbeitende Schlauchbeutelmaschinen. Bei diskontinuierlich arbeitenden vertikalen Schlauchbeutelmaschinen ist die Querschweißeinrichtung ortsfest angeordnet. Der zugeführte Hüllstoff wird zyklisch zugeführt und in Bewegungspausen des Hüllstoffs wird die Querschweißnaht gebildet. Bei kontinuierlich arbeitenden vertikalen Schlauchbeutelmaschinen wird die Querschweißeinrichtung zunächst an den sich kontinuierlich bewegenden Schlauch des Hüllstoffs angelegt und zusammen mit diesem nach unten bewegt. Während gegenüberliegende Schweißbacken der Querschweißeinrichtung den Schlauch klemmen und die gegenüberliegenden Seiten des Schlauches verschweißen, wird durch das Füllrohr Schüttgut in den nun unterseits verschlossenen Schlauch eingefüllt. Nachdem die untere Querschweißnaht fertiggestellt ist, öffnet die Schweißbacke, verfährt nach oben und bildet die obere Schweißnaht des nun gefüllten Schlauchbeutels und gleichzeitig die untere Schweißnaht des nächsten Schlauchbeutels aus. Eine innerhalb der Schweißbacken angeordnete Trenneinrichtung, beispielsweise ein Messer, trennt den gefüllten Schlauchbeutel von dem nur unterseits geschlossenen Schlauch.There are continuous flow wrappers and discontinuous flow wrappers. In the case of discontinuous vertical tubular bag machines, the transverse welding device is arranged in a stationary manner. The supplied envelope is supplied cyclically and in movement pauses the Hüllstoffs the transverse weld is formed. For continuous vertical bagging machines The cross-welding device is first applied to the continuously moving tube of Hüllstoffs and moved together with this downward. While opposite welding jaws of the transverse welding device clamp the hose and weld the opposite sides of the hose, bulk material is filled through the filling tube into the hose, which is now closed on the underside. After the lower transverse weld is completed, the weld jaw opens, moves upwards and forms the upper weld of the now filled tube bag and at the same time the lower weld of the next tubular bag. A separating device arranged inside the welding jaws, for example a knife, separates the filled tubular bag from the hose which is closed only on the underside.

Die US-4,288,965 , die eine gattungsgemäße Schlauchbeutelmaschine offenbart, behandelt das Problem, wie der Hüllstoff schonend von einer Vorratsrolle über das Zuführsystem zugeführt und mit Hilfe der Antriebseinrichtung vorgeschoben werden kann, ohne dass der Hüllstoff reißt. Dabei wird das Hauptaugenmerk bei der US-4,288,965 auf eine zeitlich abgestimmte Aktivierung der Antriebsmittel des Zuführsystems einerseits und der Antriebseinrichtung andererseits bei einer diskontinuierlichen Arbeitsweise der Schlauchbeutelmaschine gerichtet. Insbesondere bei hohen Arbeitstakten stellt sich das Problem einer angemessenen Abzugskraft für den zu verarbeitenden Hüllstoff unter Berücksichtigung verschiedener stofflicher Beschaffenheiten und Dicken, die sich auf das Reibverhalten und insbesondere bei vertikalen Schlauchbeutelmaschinen aufgrund des Eigengewichts des zu verarbeitenden Hüllstoffs auf das Abzugs- bzw. Förderverhalten der Hüllstoffe auswirkt.The US 4,288,965 , which discloses a generic tubular bag machine, deals with the problem of how the Hüllstoff can be gently supplied from a supply roll on the feed system and advanced by means of the drive means without the wrapping material breaks. The main focus in the US 4,288,965 directed to a timed activation of the drive means of the feed system on the one hand and the drive means on the other hand in a discontinuous operation of the tubular bag machine. Especially at high power strokes, the problem of an adequate peel force for the envelope to be processed, taking into account various material properties and thicknesses, based on the friction behavior and especially in vertical bagging machines due to the weight of the envelope to be processed on the triggering or conveying behavior of the sheaths effect.

Die Abzugseinrichtung ist dabei nicht nur mit einer Unterdruckquelle für die Saugkraft der Antriebsbänder angeschlossen. Vielmehr wird die Anpresskraft der Abzugseinrichtung, d.h. die Druckkraft der Antriebsbänder gegen das Füllrohr unter Zwischenlage des Hüllstoffs üblicherweise durch pneumatische Zylinder gestellt. Pneumatische Zylinder können auch zum Einstellen der Vorspanneinrichtung vorgesehen sein. Ferner kann die Längsschweißeinrichtung mit Druckluft betrieben werden, um den Hüllstoff möglichst berührungsfrei zu erwärmen und die übereinanderliegenden Lagen des Hüllstoffes zu einem Schlauch zu verschweißen.The extraction device is connected not only with a vacuum source for the suction force of the drive belts. Rather, the contact pressure of the trigger device, ie the pressure force of the drive belts against the filling tube with the interposition of the Hüllstoffs usually provided by pneumatic cylinders. Pneumatic cylinders may also be provided for adjusting the biasing means. Furthermore, the longitudinal welding device can be operated with compressed air in order to heat the cover material as non-contact as possible and to weld the superimposed layers of the covering material to form a tube.

Der vorliegenden Erfindung liegt das Problem zugrunde, eine Schlauchbeutelmaschine anzugeben, die bestmöglich an wechselnde, zu verarbeitende Hüllstoffe angepasst werden kann.The present invention is based on the problem of specifying a tubular bag machine, which can be adapted to changing, to be processed sheaths best possible.

Die US 4,578,931 offenbart eine Schlauchbeutelmaschine, die eine Unterdruckquelle und Abzugsbänder umfasst. Die Abzugsbänder sind and der Unterdruckquelle unter Zwischenschaltung eines Ventils angeordnet.The US 4,578,931 discloses a flow wrap machine comprising a vacuum source and take-off belts. The discharge belts are arranged on the vacuum source with the interposition of a valve.

Die EP-A-974 519 offenbart eine Längsschweißeinrichtung, die an eine Druckluftquelle unter Zwischenschaltung eines Ventils angeordnet ist.The EP-A-974 519 discloses a longitudinal welding device which is arranged on a compressed air source with the interposition of a valve.

Eine in der EP-A-974 519 offenbarte Abzugseinrichtung wird durch eine Antriebseinheit gesteuert.One in the EP-A-974 519 The disclosed discharge device is controlled by a drive unit.

Zur Lösung des Problems wird mit der vorliegenden Erfindung eine Schlauchbeutelmaschine mit den Merkmalen von Anspruch 1 angegeben. Bei der erfindungsgemäßen Schlauchbeutelmaschine erfolgt der Anschluss an die Unterdruckquelle und die Druckluftquelle unter Zwischenschaltung wenigstens eines elektrisch steuerbaren Ventils. In Abkehr von dem gattungsbildenden Stand der Technik, bei dem der wirksame pneumatische Druck jedenfalls durch manuell steuerbare Magnetventile eingestellt wird, kann mit der vorliegenden Erfindung das Druckniveau unterschiedlicher pneumatisch betriebener oder wirkender Teile der erfindungsgemäßen Schlauchbeutelmaschine durch Ansteuern des oder der elektrisch steuerbaren Ventile erfolgen.To solve the problem, the present invention provides a tubular bag machine having the features of claim 1. In the case of the tubular bag machine according to the invention, the connection to the vacuum source and the compressed air source takes place with the interposition of at least one electrically controllable valve. In departure from the generic state of the art, in which the effective pneumatic pressure is at least adjusted by manually controllable solenoid valves, the pressure level of different pneumatically operated or acting parts of the tubular bag machine according to the invention can be done by driving the or the electrically controllable valves with the present invention.

Das Ventil der erfindungsgemäßen Schlauchbeutelmaschine ist ein elektrisch stellbares Ventil, welches automatisch, d.h. aufgrund von vorbestimmten elektrischen Signalen gestellt wird. Dementsprechend kann das Ventil exakt gesteuert und hierdurch der das wirkende Druckniveau eingestellt werden. Die erfindungsgemäße Schlauchbeutelmaschine weist ferner eine Steuereinrichtung mit Eingabeeinrichtung zum Eingeben eines zu steuernden Drucks auf. Der Benutzer der Maschine kann über Erfahrungswerte für eine bestmögliche Druckdifferenz an den Ansauglöchern, abhängig von dem jeweiligen Material des zu verarbeitenden Hüllstoffs verfügen und diese über die Eingabeeinrichtung eingeben. Hierdurch wird der Aufwand zum Einstellen der Schlauchbeutelmaschine bei einer sich ändernden Qualität des Hüllstoffes vermindert. Es ist danach möglich, die Schlauchbeutelmaschine rasch und effektiv auf das jeweilige, zu verarbeitende Material des Hüllstoffs einzustellen. Langwierige Versuche zum experimentellen Bestimmen des Betriebspunktes sind nicht erforderlich. Im übrigen können auch während des Betriebs und bei gleichbleibender Qualität des zu verarbeitenden Hüllstoffs Parameter, wie beispielsweise die Außentemperatur und die Luftfeuchtigkeit über die Eingabeeinrichtung eingegeben werden, durch welche über hinterlegte Korrekturfaktoren den Unterdruck an den Ansauglöchern anpasst werden, um den sich mit diesen Parametern ändernden Haftungsbedingungen zwischen dem Antriebsband und dem Hüllstoff Rechnung zu tragen.The valve of the tubular bag machine according to the invention is an electrically adjustable valve, which is automatically, that is provided due to predetermined electrical signals. Accordingly, the valve can be accurately controlled, thereby adjusting the pressure level acting. The tubular bag machine according to the invention also has a control device with input device for inputting a pressure to be controlled. The user of the machine may have empirical values for the best possible pressure difference at the suction holes, depending on the particular material of the envelope to be processed and enter these via the input device. As a result, the effort to set the tubular bag machine is reduced with a changing quality of Hüllstoffes. It is then possible to adjust the tubular bag machine quickly and effectively to the respective, to be processed material of Hüllstoffs. Lengthy attempts to experimentally determine the operating point are not required. Incidentally, during operation and while the quality of the envelope to be processed remains constant, parameters such as the outside temperature and the humidity can be input via the input device, through which the negative pressure at the suction holes can be adjusted by means of deposited correction factors, in order to change with these parameters Adhesion conditions between the drive belt and the envelope account.

Vorzugsweise hat die Schlauchbeutelmaschine dementsprechend im Hinblick auf ein einfaches und zuverlässiges Einrichten der Maschine einen Speicher, der als Bestandteil der Steuereinrichtung vorgesehen ist und in dem Voreinstellungen des wenigstens einen Ventils hinterlegt sind. Diese Voreinstellungen sind über die Eingabeeinrichtung auswählbar. Dem Fachmann sind verschiedene Möglichkeiten geläufig, wie er diese Auswählbarkeit anhand der Eingabeeinrichtung verwirklichen kann. Vorzugsweise wird er einen Touch-Screen verwenden.Accordingly, the tubular bag machine accordingly has a memory which is provided as part of the control device and is stored in the presettings of the at least one valve with regard to a simple and reliable setting up of the machine. These presets can be selected via the input device. The skilled person is familiar with various ways in which he can realize this selectability based on the input device. Preferably, he will use a touch screen.

Jede der Voreinstellungen hat regelmäßig für jedes der elektrisch stellbaren Ventile einen vorgegebenen Soll-Wert. Von dem Benutzer der Maschine können Voreinstellungen konfiguriert werden. Maßgebliche Parameter zur Bestimmung der Voreinstellung sind insbesondere das Format des Schlauchbeutels sowie die stoffliche Beschaffenheit. Das Format weist insbesondere Parameter zur Bestimmung der Größe des Beutels (Beutelinhalt) und des Gewichts des mit dem zu verpackenden Gut gefüllten Schlauchbeutels auf. Darüber hinaus sind in dem Speicher, in dem die Voreinstellungen hinterlegt sind, vorzugsweise zu jeder Voreinstellung werkstoffspezifische Parameter zu dem Material des Hüllstoffs hinterlegt. Dementsprechend kann der Benutzer bei sich ändernder stofflicher Beschaffenheit des Hüllstoffes unmittelbar den zutreffenden Betriebspunkt für das oder die Ventile aus den hinterlegten Voreinstellungen auswählen. Eine entsprechend vereinfachte Bedienung ergibt sich auch beispielsweise bei einer Änderung des Formates, sofern das gewünschte Format oder zumindest ein diesem sehr stark ähnelndes Format als Voreinstellung hinterlegt ist.Each of the default settings has a predetermined setpoint value for each of the electrically adjustable valves. Presets can be configured by the user of the machine. Decisive parameters for determining the presetting are in particular the format of the tubular bag and the material nature. In particular, the format has parameters for determining the size of the bag (bag contents) and the weight of the tubular bag filled with the product to be packaged. In addition, in the memory in which the default settings are stored, material-specific parameters for the material of the envelope material are preferably stored for each presetting. Accordingly, the user can immediately select the appropriate operating point for the valve or valves from the stored presets with changing material quality of Hüllstoffes. A correspondingly simplified operation also results, for example, in the event of a change in the format, provided that the desired format or at least one format which is very similar to this is stored as the default.

Eine zuverlässige Ansteuerung des gewünschten Sollwertes an den Ansauglöchern wird insbesondere dadurch erreicht, dass als elektrisch stellbares Ventil ein Proportionalventil eingesetzt wird.A reliable control of the desired setpoint at the intake holes is achieved in particular by using a proportional valve as the electrically adjustable valve.

Weitere bevorzugte Ausgestaltungen der vorliegenden Erfindung sind in den abhängigen Ansprüchen angegeben.Further preferred embodiments of the present invention are indicated in the dependent claims.

Weitere Einzelheiten, Vorteile und Merkmale der vorliegenden Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels in Verbindung mit derFurther details, advantages and features of the present invention will become apparent from the following description of an embodiment in conjunction with the

Zeichnung. In dieser zeigen:

Fig. 1
eine perspektivische Ansicht eines Ausführungsbeispiels einer erfindungsgemäßen Verpackungsmaschine und;
Fig. 2
die Längsschweißeinrichtung und die Abzugseinrichtung des in Fig. 1 gezeigten Ausführungsbeispiels; und
Figur 3
die Zuführeinrichtung des in den Figuren 1 und 2 dargestellten Ausführungsbeispiels.
Drawing. In this show:
Fig. 1
a perspective view of an embodiment of a packaging machine according to the invention and;
Fig. 2
the longitudinal welding device and the extraction device of the embodiment shown in Figure 1; and
FIG. 3
the feeding device of the embodiment shown in Figures 1 and 2.

In Fig. 1 ist eine perspektivische Ansicht eines Ausführungsbeispiels einer erfindungsgemäßen Verpackungsmaschine mit einem im wesentlichen U-förmigen Maschinengestell 2 und einem innerhalb dieses Maschinengestells 2 aufgenommenen Schalt- und Antriebsschrank 4 gezeigt. Das Maschinengestell 2 bildet in seinem hinteren Teil eine nicht näher zu erkennende Zuführeinrichtung 6 für einen Hüllstoff aus. Die Zuführeinrichtung 6 umfasst eine verdrehfest in eine Rolle des Hüllstoffs einbringbare Welle, die mit einem seitlich zu erkennenden Zuführmotor 8 angetrieben wird. Der Hüllstoff wird über verschiedene Umlenkrollen 10 oberhalb des Schalt- und Antriebsschrankes 4 geführt, bis zu einem Kragen 12, über den die eben Bahn des Hüllstoffes zu einem sich in vertikaler Richtung bewegenden Schlauch umgelenkt wird. Hinter dem Kragen 12 wird der Schlauch um ein Füllrohr 14 mit rechteckigem Querschnitt geführt. An gegenüberliegenden Längsseiten des Füllrohres 14 befinden sich angetriebene Abzugsbänder 16, welche Teil einer Abzugs- bzw. Fördereinrichtung für den Schlauch sind. An der vorderen, sich rechtwinklig hierzu erstreckenden Stirnseite des rechteckigen Füllrohres 14 befindet sich eine Längsschweißeinrichtung 18, welche die übereinander gelegten Ränder der Hüllstoffbahn zur Ausbildung eines umfänglich geschlossenen Schlauches verschweißt. Darunter ist eine Querschweißeinrichtung 20 mit einer vorderen Schweißbacke 22 und einer hinteren Schweißbacke 24 zu erkennen.In Fig. 1 is a perspective view of an embodiment of a packaging machine according to the invention with a substantially U-shaped machine frame 2 and a recorded within this machine frame 2 switching and drive cabinet 4 is shown. The machine frame 2 forms in its rear part an unspecified to be detected feeder 6 for a Hüllstoff. The feed device 6 comprises a shaft which can be introduced rotationally fixed into a roll of the wrapping material and which is driven by a feed motor 8 to be recognized laterally. The wrapping material is guided over different pulleys 10 above the switching and drive cabinet 4, up to a collar 12, via which the flat path of the Hüllstoffes is deflected to a moving in the vertical direction hose. Behind the collar 12, the tube is guided around a filling tube 14 with a rectangular cross-section. On opposite longitudinal sides of the filling tube 14 are driven withdrawal belts 16, which are part of a deduction or conveying device for the hose. At the front, at right angles thereto extending end face of the rectangular filling tube 14 is a longitudinal welding device 18, which fuses the superimposed edges of the Hüllstoffbahn to form a circumferentially closed tube. Below this, a transverse welding device 20 with a front welding jaw 22 and a rear welding jaw 24 can be seen.

In Verlängerung des Füllrohres 14 und über dem Kragen 12 befindet sich ein Trichter 26, durch welchen von einer nicht dargestellten Wiege- und Dosiereinrichtung abgeworfenes Schüttgut intermittierend in das Füllrohr 24 abgeworfen werden kann. Die vertikale Bewegungsbahn des abgeworfenen Schüttgutes ist mit Pfeil 28 gekennzeichnet.In extension of the filling tube 14 and over the collar 12 is a funnel 26, through which discharged from a weighing and metering device, not shown, bulk material can be intermittently dropped into the filling tube 24. The vertical one Trajectory of the discarded bulk material is indicated by arrow 28.

Die jeweiligen Schweißbacken 22, 24 sind endseitig jeweils mit Stempeln 30, 32 verbunden, von denen lediglich die der vorderen Schweißbacke 22 zugeordneten Stempel in Fig. 1 zu erkennen sind. Die hintere Schweißbacke 24 ist kürzer als die vordere Schweißbacke 22 und liegt dementsprechend zwischen den Stempeln 30.The respective welding jaws 22, 24 are each connected at the end to punches 30, 32, of which only the punches 22 associated with the front welding jaw 22 can be seen in FIG. The rear welding jaw 24 is shorter than the front welding jaw 22 and accordingly lies between the punches 30.

Die in Fig. 1 gezeigte Vorrichtung ermöglicht das Abpacken von Schüttgütern in Schlauchbeuteln. Hierzu wird Hüllstoff kontinuierlich über den Kragen 12 zu einem Schlauch geformt. Unterhalb des Füllrohres 14 wird der Schlauch durch Aufeinanderzubewegen der beiden Schweißbacken 22, 24 geklemmt und verschweißt. Während die Schweißbacken 22, 24 wirksam sind, wird über den Trichter 26 eine vorbestimmte Menge an Schüttgut abgeworfen. Dieser füllt den nun endseitig geschlossenen Schlauch. Währenddessen wandert der Schlauch mit seiner unteren Schweißnaht kontinuierlich in vertikaler Richtung nach unten. Sobald die Schweißnaht die notwendige Festigkeit erreicht hat, wird die Querschweißeinrichtung 20 geöffnet. Die Querschweißeinrichtung 20 wird entgegen der Bewegungsrichtung des Schlauches nach oben gefahren und oberhalb des Schüttgutes an den Schlauch angelegt. Die obere Schweißnaht des Beutels wird ausgebildet und hierdurch der Beutel verschlossen; zeitgleich wird hierbei die untere Schweißnaht des nächsten Beutels ausgebildet. Eine in Bewegungsrichtung des Schlauches in etwa mittig an einer der Schweißbacken 22 vorgesehenen Trenneinrichtung, beispielsweise ein Messer, wird nun betätigt, um den geschlossenen Schlauchbeutel von dem bereits unterseitig geschlossenen Schlauch zu trennen.The device shown in Fig. 1 allows the packing of bulk materials in tubular bags. For this purpose, the envelope is continuously formed over the collar 12 to form a tube. Below the filling tube 14 of the tube is clamped by moving together the two welding jaws 22, 24 and welded. While the welding jaws 22, 24 are effective, a predetermined amount of bulk material is dropped through the hopper 26. This fills the now closed end hose. Meanwhile, the hose with its lower weld continuously migrates downwards in a vertical direction. As soon as the weld has reached the necessary strength, the transverse welding device 20 is opened. The transverse welding device 20 is moved against the direction of movement of the hose upwards and applied to the hose above the bulk material. The upper weld of the bag is formed, thereby closing the bag; At the same time in this case the lower weld of the next bag is formed. A separating device provided in the direction of movement of the hose approximately centrally on one of the welding jaws 22, for example a knife, is now actuated in order to separate the closed tubular bag from the hose already closed on the underside.

In Figur 2 sind die Längsschweißeinrichtung 18 sowie die Abzugseinrichtung 17 in vergrößerter Darstellung, jedoch ohne dazwischen angeordnetes Füllrohr gezeigt. Die Abzugseinrichtung umfasst zwei identisch ausgebildete Bandgehäuse 40, welche jeweils eines der Abzugsbänder 16 umlaufend drehbar lagern. Hierzu sind an gegenüberliegenden Enden des Bandgehäuses 14 gezahnte Räder 42 vorgesehen, die von den Abzugsbändern 16 umspannt sind. Eines der Räder 42 ist angetrieben. Die Bandgehäuse 40 sind über nicht dargestellte Führungen in einer Richtung auf das Füllrohr 14 zu beweglich gelagert. Zur Stellung dieser Bewegung weisen die Bandgehäuse 40 jeweils einen Stellzylinder 44 auf, der als doppelt wirkender pneumatischer Zylinder gebildet ist.In Figure 2, the longitudinal welding device 18 and the discharge device 17 are shown in an enlarged view, but without interposed filling tube. The take-off device comprises two identically designed band housings 40, each of which supports one of the take-off belts 16 rotatably in rotation. For this purpose, 14 toothed wheels 42 are provided at opposite ends of the tape housing, which are spanned by the trigger belts 16. One of the wheels 42 is driven. The band housing 40 are mounted on guides not shown in one direction to the filling tube 14 to move. To position this movement, the band housing 40 each have a control cylinder 44 which is formed as a double-acting pneumatic cylinder.

Die Bandgehäuse 40 bilden ferner eine Unterdruckkammer 46 aus, welche mit Ansauglöchern 48 kommuniziert, die sich an dem Füllrohr 14 anliegenden Abschnitt der Abzugsbänder 16 befinden.The band housings 40 further form a vacuum chamber 46, which communicates with suction holes 48 which are located on the filling tube 14 adjacent portion of the withdrawal belts 16.

An die Unterdruckkammer 46 ist ein Unterdruckkanal 50 angeschlossen, der in einen Ejektor 52. Hierbei handelt es sich um ein Ausführungsbeispiel einer mit Druckluft betriebenen Unterdruckquelle, die nach dem Venturi-System arbeitet und bei der die Mündung des Unterdruckkanals 50 von einer umgebenden Druckluftströmung umhüllt wird. Durch diesen Effekt wird die Unterdruckkammer 46 evakuiert. Druckluftseitig dem Ejektor 52 vorgelagert, befindet sich ein Proportionalventil 54. Durch Stellung dieses Proportionalventils 54 kann der Überdruck in dem Ejektor 52 und damit der in der Unterdruckkammer 46 einzustellende Unterdruck verändert werden.To the vacuum chamber 46, a vacuum channel 50 is connected, which in an ejector 52. This is an embodiment of a compressed air operated vacuum source, which operates on the Venturi system and in which the mouth of the vacuum channel 50 is surrounded by a surrounding compressed air flow , By this effect, the negative pressure chamber 46 is evacuated. By way of this proportional valve 54, the overpressure in the ejector 52 and thus the vacuum to be set in the vacuum chamber 46 can be changed.

Die doppelt wirkenden Pneumatikzylinder 54 sind mit ihren korrespondierenden Druckluftanschlüssen jeweils miteinander verbunden und hinter der Verbindungsstelle ebenfalls mit Proportionalventilen 56, 58 versehen.The double-acting pneumatic cylinders 54 are connected to each other with their corresponding compressed air connections and also provided with proportional valves 56, 58 behind the connection point.

Die Längsschweißeinrichtung 18 hat einen ersten Lufteinlass 60, der zu einer in der Längsschweißeinrichtung 18 ausgebildeten Heizkammer 62 führt, an der sich stromabwärts der Druckluft eine Vielzahl von in Längsrichtung hintereinander angeordneten Heißluftauslässen 64 anschließen. Unterhalb dieser Heißluftauslässe 64 befinden sich ebenfalls in Reihe hintereinander angeordnete Kaltluftauslässe, die über einen an der Längsschweißeinrichtung 18 ausgebildeten zweiten Lufteinlass 68 gespeist werden. Stromaufwärts der Lufteinlässe 60, 68 befinden sich jeweils Proportionalventile 70, 72. Sämtliche Proportionalventile 54, 56, 58, 70, 72 sind über ihre Steuerleitungen an eine nicht gezeigte Steuereinrichtung und pneumatisch an eine gemeinsame Druckquelle angeschlossen.The longitudinal welding device 18 has a first air inlet 60 which leads to a heating chamber 62 formed in the longitudinal welding device 18, at which downstream of the compressed air a multiplicity of hot air outlets 64 arranged one behind the other in the longitudinal direction follow. Below this hot air outlets 64 are also in series successively arranged cold air outlets, which are fed via a formed on the longitudinal welding device 18 second air inlet 68. Proportional valves 70, 72 are located upstream of the air inlets 60, 68. All of the proportional valves 54, 56, 58, 70, 72 are connected via their control lines to a control device (not shown) and pneumatically to a common pressure source.

In Figur 3 sind einige Teile der Zuführeinrichtung 6 zu erkennen. Zwei den bahnförmigen Hüllstoff umlenkende Umlenkwalzen 74 sind einem Schwenkarm 76 angeordnet, dessen Stellung über einen Pneumatikzylinder 78 einstellbar ist. Die Versorgung des pneumatischen Zylinders 78 mit Druckluft erfolgt über ein weiteres Proportionalventil 80, welches ebenfalls mit von der Steuereinrichtung gesteuert bzw. geregelt wird und pneumatisch mit der einen gemeinsamen Druckquelle verbunden ist.In Figure 3, some parts of the feeder 6 can be seen. Two deflecting rollers 74 deflecting the web-like wrapping material are arranged on a pivot arm 76 whose position can be adjusted via a pneumatic cylinder 78. The supply of the pneumatic cylinder 78 with compressed air via a further proportional valve 80, which is also controlled by the control device and pneumatically is connected to the one common pressure source.

Beim Betrieb der Schlauchbeutelmaschine können abhängig von dem verarbeiteten Material und der Größe der zu bildenden Schlauchbeutel sowie abhängig von dem Gewicht des zu verpackenden Materials unterschiedliche Betriebsparameter eingestellt werden. Dabei beeinflusst die stoffliche Beschaffenheit zunächst insbesondere die Schweißbedingungen und damit auch die Menge der durch die Längsschweißeinrichtung 18 hindurchgeförderte Luft, und zwar sowohl der erhitzten und als Heißluft abströmenden Luft zum Anschmelzen des Hüllstoffs, als auch der Kaltluft zum Abkühlen der so hergestellten Schweißnaht, die im Hinblick auf die Befüllung des Schlauches mit zu verpackendem Schüttgut unmittelbar nach Erstellen der Schweißnaht eine hinreichende Festigkeit haben muss.During operation of the tubular bag machine, depending on the processed material and the size of the tubular bag to be formed and depending on the weight of the material to be packaged, different operating parameters can be set. In this case, the material quality initially influences in particular the welding conditions and thus also the amount of air conveyed through the longitudinal welding device 18, both the heated air flowing out as hot air to melt the casing material, and the cold air for cooling the weld produced in this way With regard to the filling of the hose with bulk material to be packed immediately after the weld has been created, it must have sufficient strength.

Zur Übertragung einer durch die Antriebsgeschwindigkeit der Räder 42 vorgegebenen Abzugsgeschwindigkeit auf den Hüllstoff, muss der Anpressdruck der Abzugsbänder 16 gegen den Hüllstoff durch die Zylinder 44 angemessen eingestellt werden. Auch hat eine an das entsprechende Material und das Format angepasst Einstellung des Unterdrucks zu erfolgen, welcher durch die Ansauglöcher 48 auf den Hüllstoff wirkt. Diese Betriebsparameter werden durch Auswahl einer Voreinstellung zu einem bestimmten Format und einem bestimmten Hüllstoffmaterial ausgewählt, damit ist der Betriebspunkt der Schlauchbeutelmaschine festgelegt. Manuelles Anpassen beim Betrieb der Schlauchbeutelmaschine zur Optimierung der Betriebsparameter ist nicht erforderlich. Die Eingabeeinrichtung kann ferner Möglichkeiten zur Eingabe weiterer, die Verarbeitbarkeit des Hüllstoffs beeinflussender Parameter aufweisen, so beispielsweise der Umgebungstemperatur und der Luftfeuchtigkeit.To transmit a predetermined by the drive speed of the wheels 42 withdrawal speed on the envelope, the contact pressure of the withdrawal belts 16 against the envelope by the cylinder 44 must be adjusted appropriately. Also has to be made to the appropriate material and the format adjustment of the negative pressure, which acts through the suction holes 48 on the envelope. These operating parameters are selected by selecting a preset to a particular format and a particular envelope material, thus defining the operating point of the tubular bag machine. Manual adjustment during operation of the flow wrapper to optimize the operating parameters is not required. The input device can also have options for inputting further parameters which influence the processability of the envelope, for example the ambient temperature and the air humidity.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

22
Maschinengestellmachine frame
44
Schalt- und AntriebsschrankSwitch and drive cabinet
66
Zuführeinrichtungfeeding
88th
Zuführmotorfeed motor
1010
Umlenkrollenguide rollers
1212
Kragencollar
1414
Füllrohrfilling pipe
1616
Abzugsbänderoff belts
1717
Abzugseinrichtungoff device
1818
LängsschweißeinrichtungLongitudinal welding device
2020
QuerschweißeinrichtungTransverse welding device
2222
vordere Schweißbackefront welding jaw
2424
hintere Schweißbackerear welding jaw
2626
Trichterfunnel
2828
Pfeil (Bewegungsbahn)Arrow (trajectory)
3030
Zugstangepull bar
3232
Druckstangepushrod
4040
Bandgehäusetape case
4242
Räderbikes
4444
Zylindercylinder
4646
UnterdruckkammerVacuum chamber
4848
Ansauglöchersuction holes
5050
UnterdruckkanalVacuum channel
5252
Ejektorejector
5454
Proportionalventilproportional valve
5656
Proportionalventilproportional valve
5858
Proportionalventilproportional valve
6060
erster Lufteinlassfirst air intake
6262
Heizkammerheating chamber
6464
Heißluftauslässehot-air outlets
6666
Kaltluftauslässecold air outlets
6868
zweiter Lufteinlasssecond air inlet
7070
Proportionalventilproportional valve
7272
Proportionalventilproportional valve
7474
Umlenkwalzedeflecting
7676
Schwenkarmswivel arm
7878
pneumatischer Zylinderpneumatic cylinder
8080
Proportionalventilproportional valve

Claims (11)

  1. Tubular bag machine with a feed system (6) for wrapping material forming a tube, a filling pipe (14) which carries the material to be packed and around which the wrapping material is guided, and with which a drawing-off device (17) with at least one surrounding driven drawing-off belt (16) which conveys the wrapping material, and in which suction holes (48) connected to a vacuum source (52) to suck the wrapping material are sunk, and a longitudinal welding device (18) to form a tube from the wrapping material, are associated, and a transverse welding device (20) which has opposing welding cheeks (22, 24) to form an upper and a lower transverse weld seam of a tubular bag, and a controller with an input device,
    characterized in that
    the feed system (6) and the longitudinal welding device (18) and the drawing-off device (17) are connected to one compressed air source, that the connection of the compressed air source and vacuum source is done with at least one electrically adjustable valve (54, 56, 58, 70, 72, 80) connected intermediately, and that the controller with input device is provided for entering a pressure to be controlled by the valve (54, 56, 58, 70, 72, 80).
  2. Tubular bag machine according to Claim 1, characterized in that the controller includes a memory, in which presettings of the valve (54, 56, 58, 70, 72, 80) are stored, and that the presettings can be selected via the input device.
  3. Tubular bag machine according to Claim 2, characterized in that for the presettings, material classifications of the material of the wrapping material are stored.
  4. Tubular bag machine according to Claim 2 or 3, characterized in that for the presettings, formats of the tubular bags to be formed are stored.
  5. Tubular bag machine according to one of the preceding claims, characterized in that the electrically adjustable valve is a proportional valve (54, 56, 58, 70, 72, 80).
  6. Tubular bag machine according to one of the preceding claims, characterized in that the drawing-off device (17) includes drawing-off belts (16) which each run around a belt housing (40) and are arranged on opposite longitudinal sides of the filling pipe (40), the belt housings (40) being adjustable to adjust the contact pressure via at least one pneumatic cylinder (44) onto the filling pipe (14), and that the pneumatic cylinders (44) are connected via at least one electrically adjustable valve (56, 58) on the compressed air source.
  7. Tubular bag machine according to Claim 6, characterized in that corresponding chambers of the cylinders (44) of the two belt housings (40) are connected via a common electrically adjustable valve (56, 58).
  8. Tubular bag machine according to one of the preceding claims, characterized in that at least one vacuum source (52) operated by compressed air is provided, through it a vacuum chamber (46) sunk in the belt housing (40) is evacuated, and that an electrically adjustable valve (54) is associated with the vacuum source (52).
  9. Tubular bag machine according to one of the preceding claims, characterized in that the longitudinal welding device (18) has a first air inlet (60) leading to a heating chamber (62) and to a hot air outlet which is formed on the longitudinal welding device (18) and blows heated air onto the wrapping material, and a second air inlet (68) leading to a cold air outlet (66) which blows cold air onto the wrapping material and is provided behind the hot air outlet (64) in the conveying direction of the wrapping material, and that the first and second air inlets (60, 68) are each connected to the compressed air source via an electrically adjustable valve (70, 72).
  10. Tubular bag machine according to one of the preceding claims, characterized in that the drawing-off system includes a pneumatically adjusted pretensioning device, by which the strip of the wrapping material forming a tube leading to the filling pipe is kept under tension, and that the pretensioning device is adjusted by an electrically adjustable valve (70, 72).
  11. Tubular bag machine according to one of the preceding claims, characterized in that all electrically adjustable valves (54, 56, 58, 70, 72, 80) are connected to a common compressed air source.
EP20050008508 2005-04-19 2005-04-19 Form, fill and seal machine for tubular bags Not-in-force EP1719705B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20050008508 EP1719705B1 (en) 2005-04-19 2005-04-19 Form, fill and seal machine for tubular bags
PT05008508T PT1719705E (en) 2005-04-19 2005-04-19 Form, fill and seal machine for tubular bags
ES05008508T ES2287832T3 (en) 2005-04-19 2005-04-19 MACHINERY TO FORM, FILL AND CLOSE TUBULAR BAGS.
DE200550000872 DE502005000872D1 (en) 2005-04-19 2005-04-19 Fill and seal machine
AT05008508T ATE364552T1 (en) 2005-04-19 2005-04-19 TUBE BAGING MACHINE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20050008508 EP1719705B1 (en) 2005-04-19 2005-04-19 Form, fill and seal machine for tubular bags

Publications (2)

Publication Number Publication Date
EP1719705A1 EP1719705A1 (en) 2006-11-08
EP1719705B1 true EP1719705B1 (en) 2007-06-13

Family

ID=35462308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050008508 Not-in-force EP1719705B1 (en) 2005-04-19 2005-04-19 Form, fill and seal machine for tubular bags

Country Status (5)

Country Link
EP (1) EP1719705B1 (en)
AT (1) ATE364552T1 (en)
DE (1) DE502005000872D1 (en)
ES (1) ES2287832T3 (en)
PT (1) PT1719705E (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009012907U1 (en) * 2009-09-25 2011-02-10 Hastamat Verpackungstechnik Gmbh Tubular bag machine for producing and filling tubular bags
RU2557516C2 (en) 2010-03-26 2015-07-20 Филип Моррис Продактс С.А. Device to be used during formation of packed tobacco product
DE102011005109A1 (en) * 2011-03-04 2012-09-06 Windmöller & Hölscher Kg Method and apparatus for making sacks whose walls contain stretched polyolefin material

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4109792A (en) * 1973-04-04 1978-08-29 The Dow Chemical Company Method of packaging and product made thereby
DE2630460A1 (en) * 1976-07-07 1978-01-12 Bosch Gmbh Robert Seam welded packaging sleeve prodn. - has hot air jets directed against foil edge with pressure rollers applied to edges and cover strip
DE3113634A1 (en) * 1981-04-04 1982-10-21 Robert Bosch Gmbh, 7000 Stuttgart DEVICE FOR PRODUCING BAG PACKS
US5014493A (en) * 1988-06-08 1991-05-14 Bemis Company, Inc. Form-fill-seal packaging
JP3159479B2 (en) * 1990-10-29 2001-04-23 雅夫 福田 Packaging material feeder for vertical pillow packaging machine
US5388387A (en) * 1993-03-12 1995-02-14 Kliklok Corporation Packaging film feeding and splicing apparatus and method
US6233902B1 (en) * 1998-07-22 2001-05-22 Ishida Co., Ltd. Packaging machine

Also Published As

Publication number Publication date
PT1719705E (en) 2007-08-02
EP1719705A1 (en) 2006-11-08
DE502005000872D1 (en) 2007-07-26
ES2287832T3 (en) 2007-12-16
ATE364552T1 (en) 2007-07-15

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